From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id EAB4E9000BD for ; Mon, 19 Sep 2011 15:45:10 -0400 (EDT) Received: by ewy25 with SMTP id 25so1300305ewy.14 for ; Mon, 19 Sep 2011 12:45:08 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <20110918170512.GA2351@albatros> <20110919144657.GA5928@albatros> <20110919155718.GB16272@albatros> <20110919161837.GA2232@albatros> <20110919173539.GA3751@albatros> <20110919175856.GA4282@albatros> Date: Mon, 19 Sep 2011 22:45:07 +0300 Message-ID: Subject: Re: [kernel-hardening] Re: [RFC PATCH 2/2] mm: restrict access to /proc/slabinfo From: Pekka Enberg Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds Cc: Vasiliy Kulikov , Andrew Morton , kernel-hardening@lists.openwall.com, Kees Cook , Cyrill Gorcunov , Al Viro , Christoph Lameter , Matt Mackall , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Dan Rosenberg , Theodore Tso , Alan Cox , Jesper Juhl On Mon, Sep 19, 2011 at 10:18 PM, Pekka Enberg wro= te: >> Having some aggregate number in /proc/meminfo would probably be fine. >> >> And yes, we probably should avoid giving page-level granularity in >> /proc/meminfo too. Do it in megabytes instead. None of the information >> there is really relevant at a page level, everybody just wants rough >> aggregates. > > We have this in /proc/meminfo: > > Slab: =A0 =A0 =A0 =A0 =A0 =A0 =A020012 kB > > Or did you mean something even more specific? Oh, sorry, I completely misread what you wrote above. Sure, we can round the numbers into megabytes without breaking the ABI. Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org